Projectile.



K. A. scHuuz.

PROIECTILE.

APPLICATION FILED APR-3.1918.

1,302,720. Patented May 6,1919.

m: mum's PEIERS cc. Puma-1.1mm, WAsMINGmH. n c.

' 'To all whom it may concern i-Be it known that I, KARL A. SCHULTZ, a citize'n of the, United States, residing at Chi- ;cago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Projectiles, of which "I, the following is a specification.

My invention relates to ordnance and has for'its primary object the provision of an improved projectile and a gun especially. adapted to discharge the same, the combined action of projectile and gun being such as i to result in a reduction of air pressure against the flying projectile for a given .amount of high explosive carried inthe shell.

A'ifurther object is the provision of a proj ectile which, in flight, shall have two gyratparts opposed to each other and rotating 3 I about a common axis transverse to the line 7 ,offlight, the result of this improved construction being asteadier trajectory.

'Other objects and advantages of my invention will appear from the following descriptiontaken in conjunction with the ac companying drawings which form a part of this specification and illustrate the preferred embodiment of my invention.

; In the drawings: Figure 1 is a side elevation of the projectile of the presentinvention:

Fig; 3jis aside elevation of a modified forin of projectile 41 is a section taken online 44 of Fig. 5 is a view of the muzzle end of a gun adapted. to discharge the .projectile shown .inFig 1',,and illustrating in dotted lines f'ce'rtain rifling by means of which the profired; and I 1 Fig. 6 is a view taken on-line 66 of Fig. 5 illustrating one half of the gun adapted for, firing the projectile shown in Figs. 1 and 5 2 illustrating'in dotted lines rifling suitable for firing the projectile illustrated in Figs. 3 and'4, and showing in diagram a fragment of a breafhblock for. closing the breech of 7 the 1 I Reference numeral 10 indicates the upper half and 11 the lower half of the preferred comprising each a hollow disk having one flat side 12 and one substantially spherical side 13 which is centrally flattened as at 14. The fiat'sides 12 of the two halves are placed U ED STATES. PATENT KARL A. SCHULTZ, OF CHICAGO, ILLINOIS.

Specification of Letters Patent.

Fig.2 isa section on line 22 of Fig. 1;

jectileillustrated inFigs. 3 and 4 may be form of my improved projectile, these halves PROJEG'IILE.

Patented May 6, 1919.

Application filed April 8, 1918. Serial No. 226,361.

against each other and the halves are connected by common pivot pin 15. passing through alined central bearings in the disks.

The periphery of each disk is provided with gear teeth numbered 16 on the upper half 10 and 17 on the lower halfll.

The interior of each disk is preferably filled with a high explosive such as gun cotton or nitro-glycerin dynamite 18; When assembled the projectile, in edge View, presents the contour seenin Fig. 2, being substantially that of an ellipse having centrally flattened sides and pointed ends.

In end view the gun for. firing this projectile presents the same. general contour as thatv of the shell. Thisis seen in Fig. 5 where two substantially identical castings 19 and 20, provided with (ea r521, are fastened together by bolts 22. .On the interior of the casting 19 is formed a rack 23 along one edge, the teeth of this rack being adapted to mesh with the gear teeth 16 on half .10 of the projectile. A rack 24 similar in allrespects but located on the opposite side of the gun, is formed on casting 20,- the teeth of rack 24 meshing with gear teeth 17 on half 11 of the projectile. gun may be of any suitable form and any convenienttype of breech. block 26 may be employedto close it. l

In the operationof the invention the projectile shown in Figs. 1 and 2 is positioned near the breech of the gun, the teeth 16 en gaging rack23 only andthe, teeth 17 engag ing rack 24 only. By means of any suitable explosive positioned between the projectile and breech block the gun is fired. Inasmuch as the racks 23 and 24 are on opposite sides of the gun and each engages its respective half of the projectile it is obvious that the two halves 10 and 11 will whirl rapidly in opposite directions, about pivot during the flight of the shell.

It is to be noted, however, that the racks 23 and 24 may if desired be positioned on the same side of the n, though on opposite castings. By Sue construction the two halves of the shellwould. rotate in a com? mon direction. When these halves revolve in opposite directions the opposed gyroscopic effects act to steady the movement of the projectile during flight and to counteract to a large extent the action of the wind in causing it to deviate from its course.

When the halves revolve in a common direction. the shells trajectory is carved in a lateral direction, asthe curve ball thrown by a baseball pitcher, so that the projectile can be literally thrown around acornerwith reasonable accuracy. The un is mounted so that when the projectile is red the pivot pin: 15 is substantiallyvertical orv at least stands '7 Thus the whole face ofthe projectile. is presented to in an up and down position;

the earth and the force of gravity tending to pull the shell downwardis resisted by air pressure against this large surface, resulting in providing a longer range for this proj-ec-' tile than that'of the ordinary cylindrical pointed. shell. 7

A modified form of projectile isillustrated in Figs. 3 and 4 wherein thegear teeth 16 and 17 are omitted and: in their stead each half of the projectile is providedwith a single round projection, 27. .011 half 28, and 29 on half 30; the halves 28 and 30-- corresponding respectively to halves 10 and 11 in all other respects; These-projections,

are shaped tofit within, riflings formed, in

the gun. The modifications necessary in the gun to enable it to fire the shell depicted in- Figs. 3' and 4 are indicated. in dotted lines in Figs. 5 and 6, where ri-fling 31 is shaped to receiveprojection 27"and rifiing'32 to fit projection 29 incase these riflings are used, the racks 23 and. 24 are omitted. from the interior off the gun. The use of" the form of shell shown in Figs. 3 and 4 with the rifledi gun provides a much slower. speed of'rotation in the two halves 28 and 30 than is the case in the other form. of projectile'and gun wherein the gear teeth andracks are em ployed. The rifiingsmay, as in the case of .the racks, be so positioned as to, cause. both halves of the projectile to turn in acommon. direction Without relative movement, thereby enabling-the gunner to send a shell 7 in a wide curve-and-around an obstacle inr tenposed between him and his target,

'By altering the location" of 0ne" o-f. racks and the corresponding teeth, or by that'the degree of curvinghorizontally in.

the 'shells trajectory maybe governed inthe constnuction of the gun. andshell: alsothe teeth on; rifling on. onev castingof the; gum may be omitted altogethen as well: as the corresponding teeth or projection, whereby one of: theprojectile will fly throughthe V air without revolving at all while the. other through; the gun.

' While I. have describedmyinvention with this latter arrangement. the revolving half j of the projectile may be made to'turnin either direction to give the shell a definite; deviation from a vertical plane passing more or less minuteness as being embodied j in certain'preclse forms, yet lt'w ll befun-J- derstood that I do not desire to limitmy '7 pointed out in the appended claims. Onthecontrary. I contemplate all properichanges' self thereto unduly or any. more'than: is

in fonngconstructio'n and arrangement, the

omission of immaterial parts' and the substitution of equivalents as circumstances may suggest ori'necessity render expedient V I claim: 7

1.. A projectile comprising' relatively movable parts, and means pivoting said.

the trajectory ofthe projectile;

parts" together on anexisi at right angles to 2. A- projectile comprising concentric 7 Q;

disks and means pivoting said disks tog gether, for. relative movement on: an? axis: at. 7 right angles to the trajectory of th'e prof jecti'le..

3. pro ectlle comprising concent nc disks each chambered: for carrying amass of explosive,. and a pivot centrally posigether for'relative rotation. V 5 7 4 A projectile tioned in the. disks nd connecting them to.-

comprising concentric disks, each dislehavingzaflat face'and a cen-- V trally flattenedsphericalface, said fiat: faces.

being contiguous, a pivot central-lyjpositioned. in, the d1sks and connecting them toe gether for relative rotation, andv ;means iff rmed. on each=d1sk for recelving arot tw impulse.

5. A projectile comprising concentric; disks, means p'ivotingthe diskstogetherfor relative rotation, and an element on. each- Li disl; adaptedto receive a rotative impulse; projectilecomprising-Q concentric I disks, means pivoting the disks together for relative rotatiom'and. gear'teeth.,-formedon each d-isk.

7. A projectile comprising concentricIeir-:*

faces being contiguous, means centrally poculandi'skseach having a flat face, saidflat In testimony whereof I afiix lily-signature:

- KARLA; scnUIEZ.

Gobletotithiypatbnffiay,be obtained fomnveieents 'each by; addressing thewoinmi ssioner olfatchts, V i

a I Washington,,D.G. v j p 

